Cisco PWR-ME3750-DC= Power Supply Unit Battery And Power Supply

Cisco Catalyst 3750 Metro Series Switches can be equipped with an optional internal redundant power supply, available in both AC and DC versions. The internal power supply redundancy provides service providers with an immediate failover capability in the case of a power supply failure. The power redundancy decreases the chance of service outage and allows the service provider to offer an SLA with a higher level of service availability.
The power supplies of Cisco Catalyst 3750 Metro Series Switches are also field replaceable and hot swappable, allowing service providers to replace a failed power supply without interrupting their customers' services. The redundant power supplies, with the flexibility features built into the Cisco Catalyst 3750 Metro Series, enable service providers to build a resilient, highly available network.